Culvert-machine.



' 'PATENTED JUNE 5, 1906.

J. M. FLUKE GULVERT MACHINE. APILIUATION FILED SEPT. 13,:1906.

WNW Hm PATENTED JUNE 5, 1906.

J. M. FLUKE. GULVERT MACHINE.

APPLIOATIOH. IILEI) SEPT. 13, 1905.

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UNITED STATES JAMES M. FLUKE,

PATENT OFFICE.

OF NANKIN, OHIO.

CULVERT MACHEN E.

No. ceases.

Specification of Letters Patent.

Patented June 5,' 1906 Anplication filed September 13, 1905. Serial No. 278,326.

. kin, in the county of Ashland and State of Ohio, have invented new and useful improve inents in Culvert-Machines, of which the following is a specification.

Theinvention relates to an improvement in molds, and particularly to a mold constructed and arranged for forming. culverts, sewer-pipe, drain-tile, or the like. i

The main obj ect-of the present invention is the production of a mold of the class described constructed pf-a plurality of separable members in both'the box and core, means being provided for readily increasing or decreasing the size of the b0 Another object of the invention is the production of a sectional core which is adapted to be inserted within the box, means being provided for decreasing the diametrical ex.

tent ofthe core to permit itsready Withdrawal from the plastic material within the box.

The invention in its detail of construction will first be described in the following specification, reference being had to the accompanying drawings, in which Figure 1 isa vertical sectional View of a mold constructed in accordance with my invention, the core being shown in eleb vation. Fig. 2 is a plan view of the core. Fig. 3 is a broken vertical section of the core. Fig. 4 is a transverse section through the box, the corebeing removed. Fig. 5 is a view in elevation, partly in section, of the culvert produced in the use of the im roved mold. Fig. 6 is a transverse section through the completdi'nold, showing a modified form of the core. Fig. 7 is a vertical central section of the same, the core being shown in elevation. Fig. 8 is a plan view of the core.

Referring to the drawings, wherein like parts are indicated by similar reference-numerals throughout the several views, my improved mold comprises a box 1, circular in transverse section. and composed of a plurality of separate stri s or staves 2. These staves are arranged in contact edge to edge, snmlar to ord nary barrel construct1on, and

held in place by adjustable bands 3. The

bands are slight less in length than the circumferential length of the box and are formed withlaterally-proje'cting terminal ears 4,

perforated to receive a bolt 5 by the manipuation of theinut' 6 of which the ears for the creasing core. .On its upper sideand concentric with its central 0 ening the ring is provided with an ofl's'et 8, having one side wall at right angles to the ring 7 and on a plane concentric to itsinterior inclined upwardly and inwardly from the ring 7, as clearly shown in Figs. 1 and- 7'. Within the ing a plurality of sections 9, designed when assembled edge to edge to form a cylindrical body. These sections are of such width that when assembled thev provide a complete cylindrical body, with the exception of narrow spaces 10, in which arrange wedge diametrically opposite each other, and the adjacent edges of the corestrips or staves 9 are shaped to receive and cooperate; with said wedges. Securingstrips 12 are provided at both the upper. and lower ends ,of the core, eing of a size to include the strips 9 on'ea'ch' strips together to prevent accidental displacement. It is to be understood that the strips 12 are curved on their outer edges to conform to the curvature of the strips-9 and approximately straight on their inner edges to provide for the operation ofthe wedges.

The wedges 11 extend throughout the length of thecore, forming-fin effect, an additional core or stave, and are, connected with the respective core-sections-b-ylinksf13, piv-' otally secured to the core-sections and to the wedge-blocks, so' that each sect1on,'which includes the core-staves on one side of. the wedge-blocks and the connecting stri 1 12, has pivotal connection witheach 0 the wedges through the link described.

14, arranged near the u, 'per and of the we ge-blocks, eac of said levers comend to bearing-plates -19,-fixed onthe wedge:

verse pin 17, onwhich pin are mounted similar levers 18, pivotally. connected 'at'the opopening, the opposite side being box I arrange the core, comprise side of the Wedge andadapted to secure said The wedges areoperated toggle-levers prising links, 15, pivotally connectcdhts one blocks, and at the opposite 'end to'a trans cumfere'ntial opening of a size to receive the strips 11. The wedge-stripsgar earranged ower ends IIO and lower pins 17 and extends above the core-body, being provided with a handle 21, in the obvious operation of which the wedgeblocks may be operable.

In use, the boX havingbeen adjusted to the desired size, as liereinbefore described, the ring and offset 7 and 8 are secured in the bottom of the box,'this ring and offset in the preferred form being made in one piece. The core, with the sections fully distended by a suitable operation of the rod 20, is now inserted within the box and the space within the core and box filled with the desired plastic material. A forming-ring 22 is inserted to form the upper end of the article with a recess the reverse of that formed at the lower end, as shown in Fig. 5, and the material allowed to set. By reverse or upward movement of the rod 20 the wedge-blocks are turned inward toward the center of the core, collapsing the core-section and permitting its ready withdrawal. Through the medium of the links 13 the inward movement of the wedges forces a slight collapse of the core sections, as will be obvious, thus insuring the operation. of the parts and preventing sticking of the sections. In the use of the ring and offset 7 and 8 and the ring 22 the article is formed with matching ends to receive the opposed end of'the next adjacent section or article, as is usual.

In Figs. 6, 7 and 8 a modified form of core between the squared or wedge blocks to force the core-sections to their operative or set position. The withdrawal of this block permits a su'liicient collapsing of the sections to allow for the withdrawal from said material of the core.

Having thus described the invention, what is claimed as new is-- 1. A mold comprising a box-section composed of a plurality of staves, adjustable means for securing said staves together, and a core-section composed of a plurality of staves and wedge-blocks to cooperate with said staves, said wedge-blocks being pivotally connected with the adjacent staves, and means for operating said blocks.

2. A mold. comprising a boibsection and a core-section, the core-section being made in two parts each comprising a plurality of connected staves, wedge-blocks arranged in diametric alinement and adapted to cooperate with the adjacent ends of each of said core parts, and means connecting the cores with the adjacent core-staves.

In testimony whereof I aflix my signature in presence of two witnesses.

"JAMES M. FLUKE. Witnesses:

JOHN LUTz, IRVING WILSON. 

